add as_ptr and into_ptr inherent methods #6594

Job	Run time
fmt	26s
emscripten	0s
check-msrv	15m 8s
clippy/x86_64-apple-darwin/stable	18m 27s
clippy/x86_64-unknown-linux-gnu/stable	15m 21s
clippy/powerpc64le-unknown-linux-gnu/stable	12m 34s
clippy/s390x-unknown-linux-gnu/stable	12m 29s
clippy/wasm32-wasi/stable	12m 5s
clippy/x86_64-pc-windows-msvc/stable	17m 28s
clippy/i686-pc-windows-msvc/stable	17m 10s
python${{ matrix.python-version }}-${{ matrix.platform.python-architecture }} ${{ matrix.platform.os }} rust-${{ matrix.rust }}	0s
careful	0s
coverage-windows	4s
coverage-macos	7s
coverage-ubuntu	21m 18s
valgrind	0s
python3.11-x64 ubuntu-latest rust-stable / build	11m 23s
python3.11-x64 macos-latest rust-stable / build	17m 6s
python3.11-x64 windows-latest rust-stable / build	21m 24s
python3.11-x86 windows-latest rust-stable / build	11m 59s
conclusion	1s
	3h 24m 30s

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